How to choose an interior designer in Switzerland: the criteria that actually matter
Choosing the right interior designer is probably the most decisive choice you will make for your project. More decisive, in many ways, than the choice of materials or furniture. This is the person, or studio, who will orchestrate several months of your life, translate your identity into space, and coordinate dozens of trades on your behalf.
Yet in Switzerland, the information available to make that choice remains limited. The title of interior designer is not legally protected, which means anyone can use it. That makes selection trickier than elsewhere, and also more important. Here are the criteria that actually matter when choosing an interior designer in Switzerland, in order of priority, drawn from years of working in French-speaking Switzerland.
1. Check credentials and training
First point often overlooked: in Switzerland, the title “interior designer” is not legally protected, unlike that of architect. In practice, this means that the quality of training and professional experience become central criteria.
Several markers allow a studio to be assessed seriously. Initial training, ideally in interior architecture, architecture, or engineering with a specialisation in interior design. Years of effective experience on projects similar to yours. Membership in VSI.ASAI., the Association of Swiss Interior Architects, which maintains a public list of members admitted under strict training and experience criteria. It is not mandatory, but it is a strong signal. Presence in recognised professional media such as Marie Claire Maison, Cote, Bilan, Immobilier.ch, or Tribune de Genève is also a good indicator of validated expertise.
2. Examine the portfolio with a critical eye
A beautiful website is not enough. What you should look for in a portfolio is coherence and adaptability. A serious studio should be able to show several completed projects, ideally in the segment that matches yours — urban apartment, villa, chalet, retail.
Be wary of portfolios composed mostly of 3D renders: they show an imagined project, not a delivered one. An experienced studio presents professional photographs of spaces actually realised, with technical detail visible: quality of finishes, accuracy of proportions, precision of joinery. That is what distinguishes a real interior designer from an amateur with 3D software.
Also ask to see projects completed in your canton or city. Lausanne, Geneva, Nyon, Montreux, and Vevey come with different architectural constraints (Haussmann buildings, chalets, listed properties) and a studio familiar with your context saves you weeks.
3. Assess human fit and listening quality
An interior design project is an intense collaboration over six months to two years. Human chemistry counts as much as technical skill. During your first meeting, observe how the studio listens. Are they asking about your way of life, habits, constraints? Or are they mostly talking about themselves and their previous projects?
A red flag worth watching: a studio that immediately delivers a “vision” without first understanding yours is probably a studio that will impose its style. By contrast, a studio that takes time to understand your context before suggesting anything almost always delivers a better final project. The right interior designer is, first and foremost, a good listener.
4. Understand the approach and methodology
Beyond aesthetics, ask to understand the studio’s methodology. How do they structure a project? Which phases are planned? How many iterations are possible before concept validation? How is trade coordination handled? How frequent are site visits?
Also ask about the principles that guide the work. Some studios prioritise pure aesthetics, others a strict functional approach. One approach that stands out today is the integration of neuro-architecture and biophilic design: these disciplines take into account the real effect of spaces on focus, mood, sleep, and daily well-being. This is the approach we have chosen at RK Interiors, and it is also a differentiator worth examining when comparing several studios.
5. Understand the fee structure
Transparency on fees is an essential test. In Switzerland, the most common structures are: an hourly rate of CHF 130 to 160 for hourly missions; a percentage of the construction budget between 10 and 20% for a full project; or a fixed fee per phase used by some studios.
What matters is not the model chosen, but the clarity with which it is explained to you. A studio that dodges price questions or presents a vague proposal is one to avoid. By contrast, a detailed proposal that costs out each phase and clearly states what is included and what is not is the sign of a structured professional. Also ask how scope changes are handled mid-project. That is one of the points where cost surprises most often appear.
6. Check linguistic coverage and local knowledge
A criterion specific to Switzerland, often underestimated: the ability to work in multiple languages. A project involves trades, suppliers, sometimes a building syndic, and may cross several cantons. A studio that masters French, English, and ideally a third language smooths communication and avoids misunderstandings with the trades.
Fine knowledge of cantonal specificities also matters. In Geneva, rules on properties in protected zones differ from those in Lausanne. In Vaud, some municipalities have additional energy efficiency requirements. A studio rooted locally and having already led several projects in your canton will save you weeks.
7. Ask for recent client references
No portfolio replaces the testimony of past clients. Always request two or three contacts of homeowners who recently completed a project. A confident studio provides these references without hesitation. Ask precise questions during the call: did the project respect the budget? Was the schedule held? How were unexpected events handled? Did the studio remain available after handover?
Also read reviews on Google, Houzz, and Trustpilot, but with discernment. A studio with no negative reviews at all over ten years is suspicious. Look instead for a balance between strong positive reviews and how the studio responds to occasional criticism. True professionalism often shows in those responses.
The 5 warning signs to watch for
Beyond positive criteria, some signals should put you on alert. Here are those we see most often.
A quote that seems too low. If a proposal is significantly below others received, it likely excludes essential items that will reappear as variations during the works. A complete absence of detailed technical plans. Moodboards and 3D renders are not enough to run a construction site in Switzerland: dimensioned drawings, joinery details, and electrical plans are required. The inability to visit at least one completed project or to speak with recent clients. Difficulty obtaining a clear contract before starting. Pressure to sign quickly, with no time for reflection. A serious studio respects your decision-making pace.
The right decision takes more than one meeting
Choosing an interior designer in Switzerland takes time, and that is exactly how it should be. Meeting two or three studios before deciding is the norm, not a sign of indecision. The best professionals understand this process and support it without pressure.
At RK Interiors, founded by Renata Koglin — interior architect, engineer, and decoration columnist for Marie Claire Switzerland — we support residential and commercial projects in Lausanne, Geneva, Nyon, Montreux, Vevey, Morges, Versoix, Cologny, Coppet, Anières, Collonge-Bellerive, and across French-speaking Switzerland, as well as in Chamonix and the wider Lake Geneva area. Our approach combines technical rigour, sensitivity, neuro-architecture, and biophilic design. To discuss your project and judge for yourself whether we are the right studio, contact us. The first conversation comes with no commitment.
